Shaurya Goel Hacks UNIT 2 • 1 min read

import java.util.ArrayList;

public class Hack1 {
    private ArrayList<Integer> arrayList = new ArrayList<>();

    public void addToArrayList(int value) {
        arrayList.add(value);
    }

    public int getValueAtIndex(int index) {
        if (index >= 0 && index < arrayList.size()) {
            return arrayList.get(index);
        } else {
            
            return -1; 
        }
    }

    public static void main(String[] args) {
        Hack1 hack = new Hack1(); 

        Integer x = 7;
        hack.addToArrayList(x);
        hack.addToArrayList(4);
        hack.addToArrayList(x);
        hack.addToArrayList(x);
        hack.addToArrayList(4);
        hack.addToArrayList(x);
        hack.addToArrayList(x);
        hack.addToArrayList(x);

        System.out.println(hack.getValueAtIndex(6)); 
    }
}

Hack1.main(null)

7